• Drafting head for use with drawing boards 661 A3

• Single-handed use

• Stop-and-go push-button for easy setting at desired angle and freewheeling

• Two transparent ruler arms with double-sided opposite-running scales

• Parallel guide lines serve as hatching aid

• Automatic settings at 15° intervals

• Opposite-running protractor scales from 0-90° with additional marks at 7° and 42° for diametric projection
• Uninterrupted drawing of right angles possible

Art. no. 660 20